<template>
    <div>
        <div style="margin: 10px 0">
            <el-input style="width: 200px" placeholder="请输入名称" suffix-icon="el-icon-search" v-model="name"></el-input>
            <el-button class="ml-5" type="primary" icon="el-icon-search" @click="load">搜索</el-button>
            <el-button type="warning" icon="el-icon-refresh" @click="reset">重置</el-button>
        </div>
        <div style="margin: 10px 0">
            <el-upload action="http://localhost:9090/admin/system/file/upload" :show-file-list="false"
                :on-success="handleFileUploadSuccess" style="display: inline-block">
                <el-button type="primary" class="ml-5">上传文件 <i class="el-icon-top"></i></el-button>
            </el-upload>
            <el-popconfirm class="ml-5" confirm-button-text='确定' cancel-button-text='我再想想' icon="el-icon-info"
                icon-color="red" title="您确定批量删除这些数据吗？" @confirm="delBatch">
                <el-button type="danger" slot="reference">批量删除 <i class="el-icon-remove-outline"></i></el-button>
            </el-popconfirm>

        </div>
        <el-table :data="tableData" border stripe :header-cell-class-name="'headerBg'"
            @selection-change="handleSelectionChange">
            <el-table-column type="selection" width="55"></el-table-column>
            <el-table-column prop="id" label="ID" width="80"></el-table-column>
            <el-table-column prop="name" label="文件名称"></el-table-column>
            <el-table-column prop="type" label="文件类型"></el-table-column>
            <el-table-column prop="size" label="文件大小(kb)"></el-table-column>
            <el-table-column label="下载">
                <template slot-scope="scope">
                    <el-button 
                        type="primary" 
                        icon="el-icon-download" 
                        @click=" download(scope.row.url)">下载
                    </el-button>
                </template>
            </el-table-column>
            <el-table-column label="启用">
                <template slot-scope="scope">
                    <el-switch v-model="scope.row.enable" active-color="#13ce66" inactive-color="#ccc"
                        @change="changeEnable(scope.row)"></el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="200" align="center">
                <template slot-scope="scope">
                    <el-popconfirm class="ml-5" confirm-button-text='确定' cancel-button-text='我再想想' icon="el-icon-info"
                        icon-color="red" title="您确定删除吗？" @confirm="del(scope.row.id)">
                        <el-button type="danger" slot="reference">删除 <i class="el-icon-remove-outline"></i></el-button>
                    </el-popconfirm>
                </template>
            </el-table-column>
        </el-table>

        <div style="padding: 10px 0">
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="pageNum"
                :page-sizes="[2, 5, 10, 20]" :page-size="pageSize" layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </div>

    </div>
</template>

<script>
import request from '@/utils/request'

export default {
    name: "File",
    data() {
        return {
            tableData: [],
            name: '',
            multipleSelection: [],
            pageNum: 1,
            pageSize: 10,
            total: 0
        }
    },
    created() {
        this.load()
    },
    methods: {
        load() {
            request.get("/admin/system/file/page", {
                params: {
                    pageNum: this.pageNum,
                    pageSize: this.pageSize,
                    name: this.name,
                }
            }).then(res => {
                console.log(res)
                this.tableData = res.data.records
                this.total = res.data.total
            })
        },
        changeEnable(row) {
            request.post("/admin/system/file/update", row).then(res => {
                if (res.code === 200) {
                    this.$message.success("操作成功")
                }
            })
        },
        del(id) {
            request.delete("/admin/system/file/" + id).then(res => {
                if (res.code === 200) {
                    this.$message.success("删除成功")
                    this.load()
                } else {
                    this.$message.error("删除失败")
                }
            })
        },
        handleSelectionChange(val) {
            console.log(val)
            this.multipleSelection = val
        },
        delBatch() {
            let ids = this.multipleSelection.map(v => v.id)  // [{}, {}, {}] => [1,2,3]
            request.post("/admin/system/file/del/batch", ids).then(res => {
                if (res.code === 200) {
                    this.$message.success("批量删除成功")
                    this.load()
                } else {
                    this.$message.error("批量删除失败")
                }
            })
        },
        reset() {
            this.name = ""
            this.load()
        },
        handleSizeChange(pageSize) {
            console.log(pageSize)
            this.pageSize = pageSize
            this.load()
        },
        handleCurrentChange(pageNum) {
            console.log(pageNum)
            this.pageNum = pageNum
            this.load()
        },
        handleFileUploadSuccess(res) {
            console.log(res)
            this.load()
        },
        download(url) {
            window.open(url)
        }
    }
}
</script>

<style scoped>
div {
    margin-top: 10px;
    margin-left: 10px;
    margin-right: 10px;
    margin-bottom: 10px;
}
</style>
